单脉冲雷达对目标源的检测研究

Research on Detection of Multiple Unresloved Targets by Monopulse Radar

对于单脉冲雷达 ,当回波受到多个目标信号 (信号在频域、时域上不可区分 )的干扰时 ,得到的目标角到达方向 (DOA)不是所跟踪目标的真实信息 ,影响了系统对目标的可靠跟踪。本文在一种对回波是来自单目标还是两个不可区分目标的检测方法的基础上将其推广 ,应用到回波可能来自N个不可区分的目标。仿真表明 ,多目标情况下的检测概率不一定大于两个目标时的检测概率 ,处于间距最大上的两目标的信噪比对整个检测概率影响较大。

When the returns come from two or more unresolved targets (the signals are not resolved in the frequency or time domains ), then in a monopulse radar system the direction-of-arrival (DOA)estimation indicated by the monopulse ratio is not the true information of the tracked target. The reliable tracking of systems is influenced. In reference [1], an approach has been proposed to identify whether the returns come from a single target or two unresolved targets. Here the above approach has been extended from two to N unresolved targets.The simulation indicates that the detection probability of the N unresolved targets may not exceed that of the two unresolved targets. The detection probability is mostly affected by the SNRs of the two target which are most separated among the N targets. [